[Mrtrix-discussion] tracks2prob failed

[Robert Smith]

Hi Andrew

That's a strange error to be getting 1/3 of the way through your data set.
Essentially what it's telling me is that the streamline's position in the
TDI image is *not* a finite number (e.g. infinite or something weird like
that).

Firstly, have you tested the reproducibility of the error? Can you run the
same tracking command, making a new .tck file with the same number of
streamlines, and get the same error from tracks2prob?
There's a chance that if streamtrack was terminated abruptly, or if another
program you had running at the time had a memory leak, your streamlines
data is corrupt.

If you're still getting the same error, could you please re-run the
tracks2prob command with the -debug option enabled, and copy & paste what
the console output gives you.

Cheers
Rob

--

Robert Smith
Melbourne Brain Centre
245 Burgundy Street
Heidelberg VIC 3084
Telephone: (+61 3) 9035 7128
Fax: (+61 3) 9035 7301
Email:  r.smith at brain.org.au
www.florey.edu.au <http://www.fni.edu.au>        www.brain.org.au



On Fri, Jun 1, 2012 at 7:50 AM, Andrew Bock <abock at u.washington.edu> wrote:

> Hello,
>
> I am attempting to generate a high-resolution track density image, and
> have run the following commands:
>
> streamtrack SD_PROB con1.CSD8.mif -seed con1.DTI.mask.mif -mask
> con1.DTI.mask.mif -grad con1.DWscheme.b -step 0.1 con1.whole_brain.tck -num
> 1000000
>
> tracks2prob con1.whole_brain.tck -vox 0.5 con1.tdi.mif
>
>
> However, I receive the following error when running tracks2prob:
>
> tracks2prob: creating new template image...   - ok
> tracks2prob: mapping tracks to image...   33%tracks2prob:
> cmd/tracks2prob.cpp:132: Voxel::Voxel(const MR::Point&): Assertion `finite
> (p[0]) && finite (p[1]) && finite (p[2])' failed.
> Aborted
>
> Any suggestions?
>
> Andrew
>
>
>
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>
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